Hi,
I know maybe this is not related to DNS question, so please excuse me
if it's not that suitable.
I have two server IPs, the A records for them are:
mail.dnsbed.com. 300 IN A 74.117.233.4
mail.dnsbed.com. 300 IN A 74.117.232.204
The corresponding PTR records are:
4.233.117.74.in-addr.arpa. 36466 IN PTR dnsbed.com.
204.232.117.74.in-addr.arpa. 36453 IN PTR dnsbed.com.
But this setting can't make email sending successful.
The Postfix system says:
postfix/smtp[13775]: A65713180D9: to=<***@freenet.de>,
relay=mx.freenet.de[195.4.92.211]:25, delay=1.2,
delays=0.29/0.02/0.76/0.16, dsn=5.0.0, status=bounced (host
mx.freenet.de[195.4.92.211] said: 550 inconsistent or no DNS PTR
record for 74.117.233.4 (see RFC 1912 2.1) (in reply to RCPT TO
command))
Is there any RFC item said the A and PTR records must be consistent?
And why they must?
Thanks.